Buggy code:
public abstract class AbstractLifeCycleManager { private static final String FORCE = "force" ; private final Logger logger = Logger . getLogger ( getClass ( ) . getName ( ) ) ; private final String appName ; private final IAgentClient messagingClient ; protected AbstractLifeCycleManager ( String appName , IAgentClient messagingClient ) { } public static AbstractLifeCycleManager build ( Instance instance , String appName , IAgentClient messagingClient ) { } public abstract void changeInstanceState ( Instance instance , PluginInterface plugin , InstanceStatus newStatus , Map < String , byte [ ] > fileNameToFileContent ) throws IOException , PluginException { } public void updateStateFromImports ( Instance impactedInstance , PluginInterface plugin , Import importChanged , InstanceStatus statusChanged ) throws IOException , PluginException { boolean haveAllImports = ImportHelpers . hasAllRequiredImports ( impactedInstance , this . logger ) ; if ( haveAllImports ) { <START_BUG> if ( ( ( impactedInstance . getStatus ( ) ) == ( InstanceStatus . UNRESOLVED ) ) || ( ( impactedInstance . data . get ( AbstractLifeCycleManager . FORCE ) ) != null ) ) { <END_BUG> InstanceStatus oldState = impactedInstance . getStatus ( ) ; impactedInstance . setStatus ( STARTING ) ; try { this . messagingClient . sendMessageToTheDm ( new net . roboconf . messaging . messages . from_agent_to_dm . MsgNotifInstanceChanged ( this . appName , impactedInstance ) ) ; plugin . start ( impactedInstance ) ; impactedInstance . setStatus ( DEPLOYED_STARTED ) ; this . messagingClient . sendMessageToTheDm ( new net . roboconf . messaging . messages . from_agent_to_dm . MsgNotifInstanceChanged ( this . appName , impactedInstance ) ) ; this . messagingClient . publishExports ( impactedInstance ) ; this . messagingClient . listenToRequestsFromOtherAgents ( START , impactedInstance ) ; } catch ( Exception e ) { this . logger . severe ( ( "An<seq2seq4repair_space>error<seq2seq4repair_space>occured<seq2seq4repair_space>while<seq2seq4repair_space>starting<seq2seq4repair_space>" + ( InstanceHelpers . computeInstancePath ( impactedInstance ) ) ) ) ; Utils . logException ( this . logger , e ) ; impactedInstance . setStatus ( oldState ) ; } } else if ( ( impactedInstance . getStatus ( ) ) == ( InstanceStatus . DEPLOYED_STARTED ) ) { plugin . update ( impactedInstance , importChanged , statusChanged ) ; } else { this . logger . fine ( ( ( InstanceHelpers . computeInstancePath ( impactedInstance ) ) + "<seq2seq4repair_space>checked<seq2seq4repair_space>import<seq2seq4repair_space>changes<seq2seq4repair_space>but<seq2seq4repair_space>has<seq2seq4repair_space>nothing<seq2seq4repair_space>to<seq2seq4repair_space>update<seq2seq4repair_space>(1)." ) ) ; } } else { if ( ( impactedInstance . getStatus ( ) ) == ( InstanceStatus . DEPLOYED_STARTED ) ) { stopInstance ( impactedInstance , plugin , true ) ; } else { this . logger . fine ( ( ( InstanceHelpers . computeInstancePath ( impactedInstance ) ) + "<seq2seq4repair_space>checked<seq2seq4repair_space>import<seq2seq4repair_space>changes<seq2seq4repair_space>but<seq2seq4repair_space>has<seq2seq4repair_space>nothing<seq2seq4repair_space>to<seq2seq4repair_space>update<seq2seq4repair_space>(2)." ) ) ; } } } void deploy ( Instance instance , PluginInterface plugin , Map < String , byte [ ] > fileNameToFileContent ) throws IOException { } void undeploy ( Instance instance , PluginInterface plugin ) throws IOException { } void start ( Instance instance , PluginInterface plugin ) throws IOException { } void stop ( Instance instance , PluginInterface plugin ) throws IOException { } private void stopInstance ( Instance instance , PluginInterface plugin , boolean isDueToImportsChange ) throws IOException { } }

Fix:
if ( ( ( impactedInstance . getStatus ( ) ) == ( InstanceStatus . UNRESOLVED ) ) || ( ( impactedInstance . data . remove ( AbstractLifeCycleManager . FORCE ) ) != null ) ) {